<template>
  <div class="container">
    <div class="app-container">
      <!-- 展示树形结构 -->
      <el-tree
        default-expand-all
        :data="depts"
        :props="defaultProps"
        :expand-on-click-node="false"
      >
        <!-- 节点结构 -->
        <!-- v-slot="{ node, data }" 只能作用在template -->
        <template v-slot="{ data }">
          <el-row
            style="width: 100%; height: 40px"
            type="flex"
            justify="space-between"
            align="middle"
          >
            <el-col>{{ data.name }}</el-col>
            <el-col :span="4">
              <span class="tree-manager">{{ data.managerName }}</span>
              <!-- $event 实参 表示类型 -->
              <el-dropdown @command="operateDept($event, data.id)">
                <!-- 显示区域内容 -->
                <span class="el-dropdown-link">
                  操作<i class="el-icon-arrow-down el-icon--right" />
                </span>
                <!-- 下拉菜单选项 -->
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                  <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                  <el-dropdown-item command="del">删除</el-dropdown-item>
                </el-dropdown-menu>
              </el-dropdown>
            </el-col>
          </el-row>
        </template>
      </el-tree>
    </div>
    <!-- 防止弹层
     这里我们同样使用了sync修饰符，可以监听子组件传过来的 **update:属性名**的事件，直接将父组件的值进行修改  -->
    <addDept
      :currentNodeId="currentNodeId"
      :showDialog.sync="showDialog"
      @updateDepartment="getDepartmentInfo"
      ref="addDept"
    ></addDept>
  </div>
</template>
<script>
import { getDepartmentInfo, delDepartment } from "@/api/department";
import { transListToTreeData } from "@/utils";
import addDept from "./components/add-dept.vue";
export default {
  name: "Department",
  components: { addDept },
  data() {
    return {
      //当前点击的id
      currentNodeId: null,
      depts: [],
      showDialog: false, //控制弹层的显示隐藏
      defaultProps: {
        children: "children", //读取子节点的字段名
        label: "name", //需要显示的字段名称
      },
    };
  },
  created() {
    this.getDepartmentInfo();
  },
  methods: {
    async getDepartmentInfo() {
      const res = await getDepartmentInfo();
      this.depts = transListToTreeData(res, 0);
    },
    // 操作部门的方法
    operateDept(type, id) {
      if (type === "add") {
        this.showDialog = true;
        this.currentNodeId = id;
      } else if (type === "edit") {
        this.showDialog = true;
        this.currentNodeId = id; //记录id 用它获取数据
        this.$nextTick(() => {
          // 父组件调用子组件的方法 通过refs获取子组件方法
          // this.$refs.addDept 等于子组件的this
          // 更新props- 异步动作
          // 直接调用了子组件的方法 同步的方法
          // 要在子组件获取数据
          // 父组件调用子组件的方法来获取数据
          this.$refs.addDept.getDepartmentDetail();
        });
      } else {
        // 删除部门的方法、
        this.$confirm("请确定要删除吗？！！").then(async () => {
          await delDepartment(id); //删除接口的回调
          this.$message.success("删除部门成功");
          this.getDepartmentInfo(); //重新刷新页面
        });
      }
    },
  },
};
</script>


<style scoped >
.app-container {
  padding: 30px 140px;
  font-size: 14px;
}
.el-dropdown {
  margin-left: 30px;
}
.tree-manager {
  width: 50px;
  display: inline-block;
  margin: 10px;
}
</style>

